7 C.F.R. § 800.151
(b) Equipment. Agencies shall maintain complete records on equipment. These records consist of (1) the description of each piece of equipment used in performing official inspection or Class X or Class Y weighing services under the Act, (2) the location of the equipment, (3) the name and address of the owner of the equipment, (4) the schedules for equipment testing and the results of the testing, and (5) related information required by the Service. These records shall be maintained for 5 years.
(Approved by the Office of Management and Budget under control number 0580-0011)